/Engine/Source/Runtime/Engine/Public/WorldPartition/RuntimeHashSet/WorldPartitionRuntimeHashSet.h
virtual void ForEachStreamingCellsSources ( const [TArray](API\Runtime\Core\Containers\TArray)< [FWorldPartitionStreamingSource](API\Runtime\Engine\WorldPartition\FWorldPartitionStreamingSource) > & Sources, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool(const [UWorldPartitionRuntimeCell](API\Runtime\Engine\WorldPartition\UWorldPartitionRuntimeCell) *, EStreamingSourceTargetState)> Func ) const